Hey Tiago, I will post some screens here for you:
First of all, the directory called OS39 where the BoingBag packs are unpacked (the boingbag.info files MUST also be in this directory, otherwise they will not be found).
http://dc.classicamiga.com/root/amig.../boingbag1.png
Now simply follow the screens, in my case, the BoingBag's are unpacked under OS39, so click on it.
http://dc.classicamiga.com/root/amig.../boingbag2.png
Now chose the BoingBag you want to install.
http://dc.classicamiga.com/root/amig.../boingbag3.png
And finally click on installation.
http://dc.classicamiga.com/root/amig.../boingbag4.png
Hope this helps.

